Screwdriver head



FIG. 1 is a perspective view of a screwdriver head showing my new design;

FIG. 2 is a front side elevational view, the rear side view being a mirror image thereof;

FIG. 3 is a left side elevational view, the right side view being a mirror image thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is an enlarged screwdriver head of FIG. 2. 

The ornamental design for a screwdriver head, as shown and described. 